There are severe constraints on the supply side of the provision of infrastructure in Asia. The infrastructure financing gap between what is invested in Asia-Pacific (around US$48 billion) and what is needed (US$228 billion) is around US$180 billion every year.
Placed in the centre of a garden bed, they can be underplanted with low growing shrubs and bulbous plants for an harmonious effect; or underplanted with grass for a contrasting statement. Alternatively, the tree can be situated at the end of a long garden to draw visitors out into the garden.
In forestry, the weeds may be undesirable tree species or they may be trees of desirable species that are deformed, forked, or less vigorous than the crop trees. Controlling undesirable trees to remove undesirable competition in the forest is called timber stand improvement (TSI). rotation is the amount of time for trees to grow from seedling to final harvest. Short pine rotations of 25 years or less are typical for growing pulpwood, while rotations of 30 to 60 years are common for pine for sawtimber poles, pilings, and plywood peeler logs.